Hydrophobic coating for coated article

Abstract

An article includes a superhydrophobic body that has a matrix and non-silica (SiO 2 ) particles dispersed through the matrix. The matrix includes at least one of silicone or polysiloxane. The non-silica (SiO 2 ) particles include at least one of oxide particles, non-oxide ceramic particles, metal particles, polymer particles, carbon particles, metal hydroxide particles, or oxide-hydroxide particles.

What is claimed is: 
     
         1 . An article comprising:
 a superhydrophobic body including,
 a matrix of at least one of silicone or polysiloxane, and 
 non-silica (SiO2) particles dispersed through the matrix, wherein the non-silica (SiO2) particles include at least one of oxide particles, non-oxide ceramic particles, metal particles, polymer particles, carbon particles, metal hydroxide particles, or oxide-hydroxide particles. 
   
     
     
         2 . The article as recited in  claim 1 , wherein the non-silica (SiO2) particles include at least one of the metal particles or the carbon particles. 
     
     
         3 . The article as recited in  claim 1 , wherein the non-silica (SiO2) particles include at least one of the metal hydroxide particles or the oxide-hydroxide particles. 
     
     
         4 . The article as recited in  claim 1 , wherein the non-silica (SiO2) particles include the oxide particles. 
     
     
         5 . The article as recited in  claim 1 , wherein the non-silica (SiO2) particles include at least one of the metal particles or the non-oxide ceramic particles. 
     
     
         6 . The article as recited in  claim 1 , wherein the non-silica (SiO2) particles include the non-oxide ceramic particles. 
     
     
         7 . The article as recited in  claim 1 , wherein the non-silica (SiO2) particles include the polymer particles, and the polymer particles are polytetrafluorothylene particles. 
     
     
         8 . The article as recited in  claim 1 , wherein the non-silica (SiO2) particles include at least two different kinds of particles with respect to composition. 
     
     
         9 . The article as recited in  claim 8 , wherein one of the at least two different kinds of particles is microsphere particles. 
     
     
         10 . The article as recited in  claim 8 , wherein one of the at least two different kinds of particles is hydrophobic particles and another of the at least two different kinds of particles is water durability particles, the water durability particles increasing water durability of the superhydrophobic coating with respect to ability to retain superhydrophobic surface properties over prolonged immersion in liquid water. 
     
     
         11 . The article as recited in  claim 1 , wherein the non-silica (SiO2) particles include at least two different kinds of particles with respect to size. 
     
     
         12 . The article as recited in  claim 11 , wherein the superhydrophobic body has a mass ratio of the two different kinds of particles that is between 0.3 and 2. 
     
     
         13 . The article as recited in  claim 1 , wherein the non-silica (SiO2) particles have a surface roughness on the nanometer scale. 
     
     
         14 . The article as recited in  claim 1 , wherein the superhydrophobic body consists essentially of the silicone or polysiloxane. 
     
     
         15 . An article comprising:
 a substrate; and   a superhydrophobic coating on the substrate, the superhydrophobic coating including,
 a matrix of at least one of silicone or polysiloxane, and 
 particles dispersed through the matrix, wherein the particles include at least one of non-oxide ceramic particles, metal particles, or carbon particles. 
   
     
     
         16 . The article as recited in  claim 15 , wherein the particles include the metal particles. 
     
     
         17 . The article as recited in  claim 15 , wherein the particles include the non-oxide ceramic particles. 
     
     
         18 . The article as recited in  claim 15 , wherein the particles include the carbon particles.